Recent and upcoming talks by Hossein Lamei Ramandi

Special session on Large cardinals and combinatorial set theory, Ann Arbor, October 20-21, 2018

Paul Larson and Andrés E Caicedo are co-organizing a special session at the Fall Central Sectional Meeting 2018 in Ann Arbor, on Large cardinals and combinatorial set theory. The session will take place Saturday October 20 and Sunday October 21. continue reading…

Hossein Lamei Ramandi: A minimal Kurepa tree with respect to club embeddings

Place: Fields Institute (Room 210) Date: July 6, 2018 (13:30-15:00) Speaker: Hossein Lamei Ramandi Title:  A minimal Kurepa tree with respect to club embeddings Abstract:  We will prove that it is consistent with CH that there is a Kurepa tree which club embeds into all of its Kurepa sub trees. continue reading…

Hossein Lamei Ramandi: A rough classification of non $\sigma$-scattered linear orders

Place: Fields Institute (Room 210) Date: November 11, 2016 (14:00-15:00) Title: A rough classification of non $\sigma$-scattered linear orders Abstract: We prove that under $PFA^+$ every non $\sigma$-scattered linear order contains a real type, an Aronszajn type, or a ladder system indexed by a stationary subset of $\omega_1$ equipped with a lexicographic order or reverse lexicographic order. continue reading…